Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Starch-based thermoplastic biodegradable material and preparation method thereof

A biodegradable material and biodegradable technology, applied in the field of starch-based thermoplastic biodegradable materials and their preparation, can solve the problems of biodegradable performance and unsatisfactory mechanical processing performance, and achieve excellent flexibility and mechanical properties, as well as extreme oil resistance Good, outstanding effect at low temperature

Active Publication Date: 2011-01-12
WUHAN GREEN BOAT ENVIRONMENT PROTECTION TECH
View PDF6 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the unsatisfactory defects in the use performance, physical and chemical hygiene indicators, biodegradability, and mechanical processing performance of the above-mentioned products, the purpose of the present invention is to design a set of reasonable processes and formulas to make up for the deficiencies of the above-mentioned products, so that starch-based thermoplasticity Biodegradable materials have good physical properties of heat resistance, oil resistance, and dissolution resistance, and the waste can be completely degraded after the product is used.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Starch-based thermoplastic biodegradable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take 70kg of cornstarch, add 0.26kg of adipic acid, 0.30kg of 1,2-propanediol, 1.5kg of tributyl citrate, 0.35kg of maleic anhydride, 0.70kg of magnesium stearate, 0.7kg of fatty alcohol (C12-C14 alcohol) kg, 0.35 kg of 2,6-di-tert-butyl-4-cresol (food grade), 1.2 kg of alkyl phosphate potassium salt (PK), and 1.5 kg of caprolactam were modified in the aforementioned modified high-speed mixer for 20 minutes.

[0036]Raise the temperature to 100°C to 145°C, add 20kg of polycaprolactone, 3kg of soybean fiber and quickly mix for 15 minutes to graft, cool down and discharge to obtain a degradable starch base material. Add the above-mentioned base material to a parallel twin-screw extruder at 200°C under the action of screw shear force to carry out plasticization and polymerization, and extrude to obtain a white sheet (thickness 0.25mm) in one step.

Embodiment 2

[0038] Take 80kg of potato starch, add 0.32kg of sebacic acid, 0.40kg of 1,2-butanediol, 1kg of methyl acrylate, 1kg of ethyl acrylate, 0.4kg of maleimide, 0.90kg of calcium stearate, stearic acid Zinc 0.25kg, C16~C18 alcohol 1.2kg, 2,6 di-tert-butyl-4-cresol 0.4kg, alkyl phosphate potassium salt (PK) 0.5kg, antistatic softener (AM-A) 1.3kg, 1.2kg of hexylene bisstearamide and 1.0kg of caprolactam were modified in a high-speed mixer for 25 minutes.

[0039] Raise the temperature to 120°C to 150°C, add 12.5kg of polycaprolactone and 12.5kg of polylactic acid and quickly mix for 10 minutes to carry out grafting, cool down and discharge to obtain a degradable starch base material. Add the above-mentioned base material to a twin-screw extruder at 70°C to 240°C, plasticize and polymerize under the action of screw shear force, and extrude to obtain a white sheet (thickness 0.45mm) in one step.

Embodiment 3

[0041] Take 80kg of tapioca starch, add glutaric acid 0.35kg, 1,3-butanediol 0.55kg, methyl acrylate 1.25kg, butyl stearate 1.25kg, maleic anhydride 0.45kg, calcium zinc composite stabilizer 0.8kg, Glycerol 1kg, 2,6 di-tert-butyl-4-cresol 0.35kg, octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate (SN) 1.2kg, caprolactam 1kg, octadecylamide 0.8kg at high speed Modified in the mixer for 30 minutes.

[0042] Raise the temperature to 100°C to 140°C, add 20kg of polylactic acid and 5kg of bamboo charcoal cellulose fiber and quickly mix for 15 minutes to graft, cool down and discharge to obtain a degradable starch base material. Add the above-mentioned base material to the parallel twin-screw extruder (the device in the application number 201020139563.6) at 160°C under the action of the shear force of the screw, plasticize and polymerize, and extrude to obtain a white sheet (with a thickness of 0.75mm).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a starch-based thermoplastic biodegradable material and a preparation method thereof. The starch-based thermoplastic biodegradable material consists of the following components in parts by weight: 60 to 80 parts of plant starch, 1 to 10 parts of modified plasticizing assistant and 1 to 25 parts of degradable macromolecular compound; the macromolecules of the plant starch are catalyzed (esterified) and modified in a mixing device by using the modified plasticizing assistant so as to reduce the molecular structure; then the sufficiently modified starch micromolecules are re-combined, namely grafted; and the modified and grafted polymer is mixed, plasticized, polymerized and extruded by a double-screw extruder so as to obtain the starch-based thermoplastic biodegradable material. The starch-based thermoplastic biodegradable material of the invention can be applied to disposable tableware non-woven fabric, industrial / agricultural film and children toys or packing material; and the product is bright and soft, resists water and oil and has perfect weather resistance and high thermoforming performance.

Description

technical field [0001] The invention relates to a biodegradable material and a preparation method thereof, in particular to a starch-based thermoplastic biodegradable material and a preparation method thereof. Background technique [0002] With the development of science, product packaging is becoming more and more exquisite, but the problem of white pollution such as plastics is also becoming more and more serious. The research and development of disposable degradable materials has attracted extensive attention from research institutions at home and abroad. As a renewable natural polymer compound, starch has broad prospects for the development and utilization of plant starch resources. Various starch-filled photo / biological double degradation Plastics and products emerge in endlessly. For example, the inventor whose publication number is CN1296997 adopts plant fiber powder, polyvinyl alcohol, carboxymethyl cellulose, stearic acid and flour add water and mix the product obt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L3/06C08L67/04C08L1/02C08L89/00B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 祝顺生祝剑
Owner WUHAN GREEN BOAT ENVIRONMENT PROTECTION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com